What mill bits for 80%??????

[Onlyincali]

Can anyone please tell me what type/size/etc of mill bits are needed to complete a QD 80% with the QD jig? Takes Morse #2 taper tooling if that makes any difference.

For instance, if someone has the 80% lower, the jig, and a mini-mill, what would they need to complete this task?

Thanks!

[nate76239]

You need 5/16 to do the trigger slot and 3/8 to the main pocket. You could actually use the 5/16 for all of it but it might take longer. I put a link from Amazon for the ones I used. You also need 3/8 regular drill bit for safety selector hole and 5/32 for the hammer and trigger pin holes. I did a QD 308 lower and tactical machining AR15, the process is pretty much the same I linked the 308 jig instructions from a thread here the holes are the same on both.

http://www.amazon.com/EM-FX10-Flute-Extra-Long-End/dp/B006MWC41I/ref=pd_tcs_subst_hi_2?ie=UTF8&refRID=13KBEQNZP3PE40DFS65Y

http://www.amazon.com/EM-FX12-Flute-Extra-Long-End/dp/B006MWC4HW/ref=pd_tcs_subst_hi_3?ie=UTF8&refRID=0CE7FGP76B982ANGF9W5

http://www.calguns.net/calgunforum/showthread.php?t=756641&highlight=Aimsmall

[Trout_fear_me]

I would consult with the manufacturer of the jig. Most of them will give you the specific bits/tools/end-mills they want you to use.

Also, some jigs are not universal... in other words only their specific lower will work with their jig.

[Onlyincali]

Thank you guys!!!!! Greatly appreciated. Couple more questions for you pros

1. How long should it take a non-retarded person to complete their FIRST 80% ar15 on a manual mini mill? (roughly....are we talking 20 minutes or 8 hours?)

2. Does anyone have a good link to ar15 instructions? The 308 ones posted above are FANTASTIC but I cant find instructions for Ares, TM, or QD jigs.
Thanks again!

[shafferds]

On a mil about 1 hour to 1 1/2.

[bohoki]

i bought a little 8mm x 8mm 4 flute off ebay for like $5 delivered so far made 4 80% with it i cant remember which drillbit i used to remove most of the material but it is about half the pocket width and i do 2 lines of holes

[CK_32]

If you want clean walls don't forget to get a quality end mill.

[Dumas1012]

Here's a good video to watch.

[ar15barrels]

1. How long should it take a non-retarded person to complete their FIRST 80% ar15 on a manual mini mill? (roughly....are we talking 20 minutes or 8 hours?)

An experienced machinist, perhaps an hour.
An un-experienced machinery user, 3 hours.

[Onlyincali]

Thank you guys!!!!! Is it safe to "free hand" on a mini mill while using a jig? Ie: can I hold the jug and move it around by hand or do I HAVE to keep it clamped to the sliding table?

[CK_32]

An experienced machinist, perhaps an hour.
An un-experienced machinery user, 3 hours.

Randal is being modest. I will fall under that not so experienced class, I expect this to take my at least a few hours over a couple of days. lol

[ar15barrels]

Thank you guys!!!!! Is it safe to "free hand" on a mini mill while using a jig?

No.
You can expect broken cutters and possibly stitches doing it that way.
The whole REASON that a milling machine has a table is so that you can bolt things to it and then turn the cranks to move the part around while cutting it.

[$P-Ritch$]

Thank you guys!!!!! Greatly appreciated. Couple more questions for you pros

1. How long should it take a non-retarded person to complete their FIRST 80% ar15 on a manual mini mill? (roughly....are we talking 20 minutes or 8 hours?)

2. Does anyone have a good link to ar15 instructions? The 308 ones posted above are FANTASTIC but I cant find instructions for Ares, TM, or QD jigs.
Thanks again!

I'm only mildly retarded and I just finished my first 80% this summer. It took me 3 hours on the dot using a drill press. It was a broken arms jig/lower with their recommended tooling. Someone else posted their walkthrough video. I just watched it about 3 or 4 times and then wrote out all the steps in sort of a checklist format to refer to while in the actual process.